This is one nose electric retract for models up to 14kgs
The gear operates thanks to high torque stepped motors, giving an extreme precision of travel and very reliable stop feature.
The gear is programmed with a start step and end step. The resolution Behotec is working at is 35mm/7600= 0,0046 mm per step or 4,6 thousands of mm. Thanks to the very accurate trunion machining, the position can be acquired very precisely. This is working extremely well and the positioning of the trunion assembly is very consistent. The electronics has a current tripoff and timeout function as an additional safety feature. In practice the gear always stops at the stop step ( positioning stop ) and not from current tripoff with the trunion right into the end of the groove. The menu on the GSU allows to see that.
For a complete description of the system, refer to the blog: